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f2fs: sanity check segment count

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F2FS uses 4 bytes to represent block address. As a result, supported
size of disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments.

Change-Id: I64d9be6dcc4ab5d8a45359c69d6163ed0209e8fe
Signed-off-by: Jin Qian <jinqian@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Git-repo: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
Git-commit: b9dd46188edc2f0d1f37328637860bb65a771124
Signed-off-by: Dennis Cagle <dcagle@codeaurora.org>
This commit is contained in:
Jin Qian 2017-04-25 16:28:48 -07:00 • committed by Dennis Cagle
parent a49bb61510
commit e4f6002702
1 changed files with 6 additions and 0 deletions
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6
include/linux/f2fs_fs.h
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@ -289,6 +289,12 @@ struct f2fs_nat_block {
*/
#define F2FS_MAX_SEGMENT ((16 * 1024 * 1024) / 2)
/*
* F2FS uses 4 bytes to represent block address. As a result, supported size of
* disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments.
*/
#define F2FS_MAX_SEGMENT ((16 * 1024 * 1024) / 2)
/*
* Note that f2fs_sit_entry->vblocks has the following bit-field information.
* [15:10] : allocation type such as CURSEG_XXXX_TYPE